Dishwashing machine



Mar. 3, 1925. 1,528,409

(1. F. DOBLE.

DYISHWASHING MACHINE Filed March 10, 1924 2 Sheets-Sheet 1 F" 1 j INVENTEIW @M {RM Mar. 3. 1925. 1,525,409

. C. F. DOBLE DISHWASHING MACHINE Filed 10, 1924 2 Sheets-Sheet 2 IHVEPITEIPQ e? wbffsliym y .MM.W\W%M ATT RN yi Patented M11133, 1925. Q

UNITED STATES I 1.52am PATENT OFFICE.

' W F. norm 0] QUDI'GY, IASSAGHUSETTS, ASSIGHDB 1'0 WELILI H. DOBLE,

' OI QUINCY,

msnwnsme Application fled larch 1t,

'in which the "shes are supported in a holder abovethe level of the water in a tank and the water is dashed against the dishes. The object of-the present invention is to provide means for varying'at will the necessary amount of hot water required for a predetermined level of water, in the tank. The invention consists in-providing a dislacement member or members which can be adjusted as desired to lessen the amount of water required for maintaining the water at a predetermined level in the tank.

The invention will be fully understood from the following description when taken in connection with the accompanying draw-' ings, and the novel features thereof will be pointed out and clearly defined in the claims at the close of this-specification.

In the drawings:

Fig. 1 is a vertical section of a dish wash- 1924. sum n. $8,024.

which meshes with a bevel v on a horizontal shaft 13 whereby the said shaft 13 is rotated. A rotor 14: is

revolubly mounted upon thebearin 10 as. an axis. Said rotor has upright. members 15, 15, within which the shaft 13 is journalled, said bearing members, 15, 1&7, be ing connected by tie .-rods 16. j A pump casing "17 of a centrifugal pump projects from said rotor casting on'the opposite side ofits axis as of rotation from the shaft bearing members 15', 15'. .The'shaft 13 extends-through the the ump casing 17.

' ounted fast on peller blades 18 which revolve Men; the shaft 13 and throw the water upwardly over the; dishes in the rack. 1 Preferably a bearing member 15 and is journalled also in semi-cylindrical screen 19 is provided which" I partially surrounds the propeller-blades;

Fast on'the shaft 13 the pum casing 17 is abladed rotary piston 21. whic 1 rotates with 'the shaft. The pumppiston and the propeller blades rotate simultaneously on a horizontal axis and revolve together about a vertical axis. 'Water is admitted into the pump casing through a pipe 22 and is driven upwardly by said piston '21 through the outlet 23 into a pipe 24 which passes up through the dish racks 4, 86

5 and 6. The said pipe 24 is provided at its gear 12 mounted l the shaft 1 3 Zare ie-1o. i

' showing in dotted lines the displacement ing machine embodying the invention, the

displacement -members being shown as set to their position of greatest displacement.

Fig. 2 is a horizontal section. 7 Fig. 3 is a fragmentary,- vertical section discharges the water over the dishes in the racks as the rotor casting revolves, carrying with it the pump and the propeller. Thetank no is provided with aldraw-oflf opening 26 provided with a suitable fitting .27. The water 7 may be introduced into the tank in any con- Inembers turned up into a substantially nonvenient way. It may be done by removing displacement position. the nozzle 25 temporarily and connecting upper end with a, discharge nozzle 25 which I lower end of said shaft being detachably connected with a motor shaft 8 driven by a motor 9. The said shaft 7 is journalled in a "bearing 10 in the bottom of the tank which carries at its upper end a bevel gear 11 the upper end of the pipe 24-with a filling hose, or filling it in any other way desired.

When in operation the water level is preferably maintained at or slightly above the shaft 13 of the rotor.. In the drawings, 10

the water level is shown at 280.

Adjustable displacement members for the purpose previously specified are provided.

Preferably there are two displacement members on opposite sides of the rotor, as shown m the, drawings for more complete regulation and control of the water, although the device is operative with only one displacement member. The displacement members may be of any form and operated in any,

way desired. For the pur oseof illustra tion I have shown the pre erred form andmethod of operating the same as follows. The two displacement members 28, 28 are alike and are operated simultaneously. Each displacement member 28, as shown in thedrawings, is in a general way segmental in contour having an outer curved periphery 29 co-axial with thecircular contour of the tank but of smaller radius and on its inner edge 30 it follows the irregular .contourof the rotor to which it is attached including the casting 14, the pump casing 17, the pipe 22, and the propeller casing. Each displacement member is hinged at 31 to the rotor, the hinges being shown at 32. The displacement members are shown in Fig. 3 in full lines in their downward position for full displacement and are shown in dotted lines in their elevated position. There is an annular space 43 between the outer periphery of the displacement members and the wall of the tank. The thickness of the displacement members is preferably about equal to the normal predetermined depth of water, the water being in the annular space 43 and other vacant spaces not occupied by the displacement members. and the rotor mechanism. By turning the displacement members up more-or lesson their hinges, the available water space is varied. In order to provide means for operating the displacement members there is provided a vertical rod 33 whose lower end has a flexible connection with each one of the displacement members atsome point intermediate the hinge and the outer periphery of the displacement member, the said connection shown consisting of links 34, 35, one end of each ofwhichis connected flexibly with the displacement member by means of eyes.36, 37, respectively, and the other ends of said links 34, 35, are connected with a ring 38 on the lower end of said rod33.

The saidrod 33 extends upward into a position in the upper part of the tank where it can be readily reached by the operator and is preferably provided with a handle 40.

' Preferably the said rod extends up alongside of the water pipe 24, passing through guides 41, 42. Preferably a spring latch 44 is provided for holding the rod 33 in its adjusted position- Any other suitable holding means may be used.

The displacement members .will move around with the rotation ofthe rotor on a vertical axis and the propeller blades will also rotate on a horizontal axis.

The displacement members may be of wood, metal or any other material. They may be solid or hollow and of any suitable shape. The inner contour will preferably be determined b the shape .of the rotor and its attached m'ec anism.

It is obvious that by the use ofmy disuplacement mechanism a predetermined water level may be maintained with much less quantity of water than without such a device.

What I claim is:

1. In a dish washing machine, the combination with a receptacle to hold .the washing fluid, means to support dishes within the re ceptacle above the normal level of the fluid, means in the lower part of the receptacle to project thefluid against the dishes while supported on the holder, and an adjustable fluid displacement member which is adapted to partially fill the water space in the re- .ceptacle.

2. In a dish washing machine, the combination with a receptacle to hold the washing fluid, means for supporting the dishes within the receptacle above the level of the fluid, a rotary member in the lower part of the receptacle to project the washing fluid against the dishes, and an adjustable fluid displacement member whichis adapted to partially fill the water space in the receptacle between the said rotary member and the wall of the receptacle, said displacement member being connected with the rotary member and rotating therewith.

3. In a dish washing machine, the combination with a receptacle to hold'the washing fluid, means for supporting the dishes within the receptacle above the level of the fluid, a rotary member in the lower part of the receptacle to project the washing fluid against the dishes, an adjustable fluid displacement member which is adapted to partially fill the water space in the receptacle member up on its hinge to lessen the. area of displacement below the normal water level. I

4. In a dish washing machine, the combination with a receptacle to hold the washing fluid, means for supporting the dishes within the receptacle above the level of the fluid, a rotary member in the lower part of the receptacle to project the washing fluid against the dishes, an adjustable fluid displacement member which is adapted to partially fill' the water space in the receptacle between the said rotary member and the wall of the receptacle, said displacement member being connected with the rotary member and rotating therewith, said displacement member being hinged to the said rotary member and an upwardly extendin rod connected at its lower end with said displacement member, the upper end of said rod being accessible for o eration in ,the

5. In a dish washing machine, the combiagainst the dishes, an adjustable fluid displacement member which is adapted to partially fill the water space in the receptacle between the said rotary member and the wall of the receptacle, said displacement member being connected with the rotary member and rotating therewith, an upwardly extending pipe carried by the rotary member through which the washing fluid is forced havin a discharge outlet throu h which the uid is discharged upon t e dishes, said displacement member being hinged to said rotary member, and an upwardly extending rod alongside of said pipe connected at its lower end to said displacement member and having an operating handle at its upper end, and guide members through which the said operating-rod passes. In testimony whereof I afiix my signature.

CHARLES F. DOBLE. 

